Fix storage/cache ignore path and untrack cache files

.gitignore

@@ -8,7 +8,7 @@ app/storage/test.db
 
 ### Logs ###
 error.log
-app/storage/cache/*
+storage/cache/
 
 # Nix
 .direnv/

TODO.md

@@ -1,3 +1,2 @@
-[ ] Describe commit
-[ ] Squash/clean up if needed
-[x] Commit and finalize
+- [x] Fix .gitignore path for storage/cache/ (was `app/storage/cache/`)
+- [x] Untrack storage/cache/rate_limit/*.json files with jj